Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a12a3abc9afba5d…

MALICIOUS

PDF

80.3 KB Created: 2021-03-06 11:56:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 31dc574ff428db36123298bbc1d0766a SHA-1: aecc14e0d9c02e9659f69fd40cd4a2e7a9c3349b SHA-256: 8a12a3abc9afba5db079c50a4a9a573b7356bbde82cbacf71eae80814eea2d84
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, appears to contain metadata related to the URL's search query, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://kuzutuzo.ru/123?utm_term=what+is+the+french+tiktok+song+called PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486981/normal_601bb9c5ac5f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503214/normal_5fcf2eafd64a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383160/normal_602c6cd58a351.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467573/normal_5fd074d92091c.pdfIn PDF document text
    • http://bonifacy.site/disneyland_resort_map_2020nuwgm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418972/normal_6040ae150bf12.pdfIn PDF document text
    • http://conicppjry.bid/563585142286co8u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391317/normal_5ffd368a093f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469633/normal_6003d7284a67e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425229/normal_5ff92aab84abb.pdfIn PDF document text
    • http://makeyourself.xyz/fastest_bowling_ball_speed_records1eug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_602530c23b2e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_6015b7073290f.pdfIn PDF document text
    • http://gumimexolekedid.22web.org/in_feng_shui_what_is_the_best_color_for_a_bedroom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/15774604100.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/2015_lexus_es_300h_fuel_economy.pdfIn PDF document text
    • http://relizaki.epizy.com/project_steering_committee_charter_template.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_1c32eb144ab24dc59b72dceaceb46f96.pdf?index=trueIn PDF document text
    • https://e4586023-485a-43f1-9451-2d404684c5b7.filesusr.com/ugd/95ff22_feb80abd22c045b4b1c19652ef0b0d8c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/kendo_ui_scheduler_event_template.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/are_nys_drivers_license_renewals_extended.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/gofaretenirijezo.pdfIn PDF document text
    • http://jepisaf.epizy.com/best_wallpapers_hd_for_mobile_free.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8B 5360 bytes
SHA-256: 1f9b214aac1a43a9255ab7a2f81cbe57f8e46f343486dd6517c1b7a19dfe0d86
font_01_sfnt_off00010ecd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECD 10788 bytes
SHA-256: 96e4bbb84ad0c51870f4259acef0443d61f4d878f46188f738229be4cc83ab6b

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